Method of producing fcc catalysts with reduced attrition rates
AssigneeBASF SE
InventorsMichael Sigman, Mitchell Willis, Kenneth Folmar
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Abstract
FCC catalysts having improved attrition resistance are provided by mixing a cationic polyelectrolyte with either zeolite crystals or a zeolite-forming nutrient and/or a matrix material, prior to or during formation of a catalyst microsphere.
Claims20
An FCC zeolite-containing catalyst microsphere comprising zeolite, said microsphere formed from at least one of a zeolite-forming nutrient or zeolite crystals and a matrix, at least one of said zeolite crystals, said zeolite-forming nutrient or said matrix being mixed with 0.005 to 0.5 wt. % of a cationic polyelectrolyte relative to the weight of said zeolite crystals or zeolite-forming nutrient and said matrix, prior to or during formation of said microsphere.
A method of making an FCC catalyst microsphere comprising forming a slurry of either zeolite crystals or hydrous kaolin, metakaolin or both of said kaolins and a matrix, mixing with said slurry, a cationic polyelectrolyte, spray drying said slurry into microspheres and, if needed, reacting said microspheres with a silicate to form catalyst microspheres containing zeolite crystals formed in-situ, said cationic polyelectrolyte comprising 0.005 to 0.5 wt. % of said slurry relative to said zeolite crystals or said kaolin and matrix.
Dependencies are inferred from the claim text.